Korean actor Lee Byung-hun, who is engaged in a legal battle with his former girlfriend, was questioned by Korean authorities last week.

“We summoned Lee and with his consent, held an investigation from 8 p.m. on Wednesday evening through 5 a.m. the next morning,” an official with the Korean Prosecutors’ Office was quoted as saying on Thursday. He explained that the night-long questioning was regarding the two lawsuits filed by the actor and one filed against him.
On December 8, a Korean-Canadian woman by the last name Kwon, who claimed to be a former girlfriend of Lee’s, had filed a lawsuit against the Hallyu star, saying she was allured into a sexual relationship based on false promises of marriage.
She asked to be paid KRW 100 million won in physical and psychological damages and also reported to authorities that the actor had taken part in illegal baccarat gambling overseas.
Lee took counter legal action through his legal representative Kim & Chang, suing the woman for libel and asking the police to investigate multiple threats that he had received regarding his relationship with Kwon.
[Source]